save project

diy2.py

+i = 3
 username = "python"
 userpassword = "123456"
 while True:
-    name = input("请输入用户名:")
-    password = input("请输入密码:")
-    # if name == username and password == userpassword:
-    #     print("登录成功!")
-    #     break
-    if name != username:
-        print("用户名错误！")
-    else:
-        if password != userpassword:
-            print("密码错误！")
+    if i>0:    
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
+        i = i - 1
+        # if name == username and password == userpassword:
+        #     print("登录成功!")
+        #     break
+        if name != username:
+            print("用户名错误！")
         else:
-            print("登录成功!")
-        break
\ No newline at end of file
+            if password != userpassword:
+                print("密码错误！")
+            else:
+                print("登录成功!")
+            break
+    else:
+        print("系统已被锁定，请使用身份证解锁。")
\ No newline at end of file